CN219873726U - Battery box and battery - Google Patents

Abstract

The utility model provides a battery box and a battery. The battery box comprises a bottom plate, a frame and a supporting partition plate, wherein a first flow channel is arranged in the bottom plate, the frame is arranged on the bottom plate to form a box inner cavity, a second flow channel is arranged in the frame, the supporting partition plate is arranged in the box inner cavity, a third flow channel is arranged in the supporting partition plate, and the first flow channel, the second flow channel and the third flow channel are all used for flowing heat conducting media. The bottom plate, the frame and the supporting partition plate of the battery box body are respectively provided with the corresponding flow channels for transferring heat, so that the temperature of a plurality of electric cores contained in the inner cavity of the box body is balanced, and meanwhile, the supporting partition plate transfers out the whole internal heat of the electric cores, so that the problem of heat aggregation is avoided.

Description

Battery box and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery box and a battery.

Background

The battery comprises a plurality of battery cells, a box body and a battery management system, wherein heat can be generated in the battery cells in the use process of the battery, and the heat in the battery cells cannot be rapidly dissipated to enable the battery to generate heat aggregation, so that the battery is in a fire or explosion phenomenon. In the related art, a flow channel is arranged in a bottom plate and a frame of a battery box body, and heat of the battery cell is dissipated through a cooling medium in the flow channel. However, the runner only can rapidly dissipate heat of a part of the battery cells adjacent to the box body, and the heat of the part of the battery cells positioned in the box body cannot be rapidly dissipated, so that the battery still has the problem of heat accumulation, and meanwhile, a large temperature difference can be generated between the part of the battery cells in the box body and the part of the battery cells adjacent to the box body, so that the output power of the battery and the service life of the battery are reduced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides a battery box body, wherein corresponding flow passages are respectively arranged in a bottom plate, a frame and a supporting partition plate of the battery box body and are used for transferring heat, so that the temperature of a plurality of electric cores contained in the inner cavity of the box body is balanced, and meanwhile, the supporting partition plate transfers out the whole internal heat of the electric cores, so that the problem of heat aggregation is avoided.

The embodiment of the utility model also provides a battery.

The battery box body of the embodiment of the utility model comprises:

the heat-conducting device comprises a bottom plate, wherein a first flow channel is arranged in the bottom plate and used for flowing heat-conducting medium;

the frame is arranged on the bottom plate to form a box body inner cavity, and a second flow passage is arranged in the frame and used for flowing of heat conducting media;

the support baffle is arranged in the inner cavity of the box body, and a third flow passage is arranged in the support baffle and used for flowing of heat conducting medium.

According to the battery box body, the first flow channel is arranged in the bottom plate, the second flow channel is arranged in the frame, and the third flow channel is arranged in the supporting partition plate, so that the bottom plate, the frame and the supporting partition plate all have the heat conduction effect, particularly the heat dissipation and cooling effect, when a plurality of battery cores are placed in the inner cavity of the box body, the bottom of the whole of the battery cores is used for conducting heat through the bottom plate, the frame is arranged on the periphery of the whole of the battery cores for conducting heat, the supporting partition plate extends to the inside of the whole of the battery cores for conducting the heat of the whole of the battery cores, heat aggregation is avoided, and meanwhile, the bottom, the periphery and the inside of the whole of the battery cores are subjected to the heat conduction effect, so that large temperature difference is not generated among the battery cores, the output power of the battery is stable, and the service life of the battery is prolonged.

In some embodiments, the battery case further comprises:

the medium inlet is arranged on the frame or the bottom plate, and the first flow channel, the second flow channel and the third flow channel are communicated with the medium inlet; and/or

The medium outlet is arranged on the frame or the bottom plate, and the first flow passage, the second flow passage and the third flow passage are communicated with the medium outlet.

In some embodiments, the first and second flow passages have inlet and outlet ends respectively,

the inlet end of the first flow channel is communicated with the medium inlet, the inlet end of the first flow channel extends from the medium inlet to a first direction, the inlet end of the second flow channel is communicated with the medium inlet, the inlet end of the second flow channel extends from the medium inlet to a second direction, the second direction is reverse to the first direction,

the outlet end of the first flow channel is communicated with the medium outlet, the outlet end of the first flow channel extends from the medium outlet to the second direction, the outlet end of the second flow channel is communicated with the medium outlet, and the outlet end of the second flow channel extends from the medium outlet to the first direction.

In some embodiments, the media inlet and the media outlet are both provided on the rim,

an inlet flow dividing flow passage and an outlet flow converging flow passage are further arranged in the frame, the inlet flow dividing flow passage and the outlet flow converging flow passage are arranged at intervals in a third direction, the third direction is orthogonal to the first direction,

the inlet flow dividing flow passage comprises a first sub flow passage and a second sub flow passage which are communicated, the first sub flow passage extends along a fourth direction, the fourth direction is orthogonal to the first direction and the third direction, the first sub flow passage is communicated between the medium inlet and the inlet end of the first flow passage, the second sub flow passage extends from the first sub flow passage to the second direction, the inlet end of the second flow passage is communicated with the second sub flow passage,

the outlet confluence flow passage comprises a third sub flow passage and a fourth sub flow passage which are communicated, the third sub flow passage extends along a fourth direction, the third sub flow passage is communicated between the medium outlet and the outlet end of the first flow passage, the fourth sub flow passage extends from the third sub flow passage to the first direction, and the outlet end of the second flow passage is communicated with the fourth sub flow passage.

In some embodiments, the medium inlet and the medium outlet are arranged at intervals in the first direction, the medium inlet is located at one side of the medium outlet in the first direction, and the first sub-runner projection is located at one side of the third sub-runner projection in the first direction in a projection plane orthogonal to the third direction.

In some embodiments, the cross-sectional area of the second flow channel is greater than the cross-sectional area of the second sub-flow channel, and the cross-sectional area of the second flow channel is greater than the cross-sectional area of the fourth sub-flow channel.

In some embodiments, the support partition extends along a first direction, the support partition is connected to the frame at both ends of the first direction, the third flow channel extends along the first direction, and both ends of the third flow channel in the first direction are communicated with the second flow channel.

In some embodiments, the cross section of the second flow channel is a bar shape extending along a fourth direction, the fourth direction is orthogonal to the first direction, the third flow channels in the supporting partition plate are a plurality of, and the plurality of third flow channels are arranged at intervals in the fourth direction; and/or

The first flow channel comprises a fifth sub flow channel, a sixth sub flow channel and a seventh sub flow channel, wherein the fifth sub flow channel is communicated with the medium inlet and extends from the medium inlet along the first direction, the sixth sub flow channel is communicated with the medium outlet and extends from the medium outlet along the second direction, the seventh sub flow channel is communicated between the fifth sub flow channel and the sixth sub flow channel, at least part of the seventh sub flow channel extends along a third direction, the third direction is orthogonal to the fourth direction and the first direction, and the seventh sub flow channel is multiple.

In some embodiments, the inner cavity of the box body comprises a first subchamber and a second subchamber, the first subchamber and the second subchamber are sequentially arranged in a third direction, the third direction is orthogonal to the first direction, the plurality of support baffles are arranged in the first subchamber so as to divide the first subchamber into a plurality of battery cell bins, the battery cell bins are used for containing battery cells, and the second subchamber is used for containing a battery management system;

the second flow passage comprises an eighth sub flow passage and a ninth sub flow passage, the eighth sub flow passage and the ninth sub flow passage are arranged at intervals in the first direction, the eighth sub flow passage is communicated with the medium inlet, the ninth sub flow passage is communicated with the medium outlet, and the third flow passage is communicated between the eighth sub flow passage and the ninth sub flow passage.

The battery of the embodiment of the utility model comprises:

the battery box body is the battery box body according to any one of the embodiments;

the battery cells are arranged in the inner cavity of the box body, the number of the battery cells is multiple, and each battery cell is abutted to the supporting partition plate or the frame.

The battery provided by the embodiment of the utility model has the advantages that the temperature of the plurality of battery cores accommodated in the inner cavity of the battery box can be balanced, and meanwhile, the supporting partition plate can transfer out the whole internal heat of the plurality of battery cores, so that the problem of heat aggregation is avoided.

Drawings

Fig. 1 is a schematic view of a structure of a battery according to an embodiment of the present utility model;

fig. 2 is a schematic view of a battery case according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of the inlet manifold and the outlet manifold according to the embodiment of the present utility model;

FIG. 4 is a schematic view of a first flow channel according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a bezel in an embodiment of the present utility model;

fig. 6 is a cross-sectional view of a support baffle in an embodiment of the present utility model.

Reference numerals:

1. a bottom plate; 11. a first flow passage; 111. a fifth sub-flow path; 112. a sixth sub-flow path; 113. a seventh sub-flow path; 2. a frame; 21. a second flow passage; 22. an inlet flow-splitting runner; 221. a first sub-flow path; 222. a second sub-flow path; 23. an outlet converging flow passage; 231. a third sub-flow path; 232. a fourth sub-flow path; 24. a first subchamber; 241. a battery cell bin; 25. a second subchamber; 3. a supporting partition; 31. a third flow passage; 4. a media inlet; 5. a medium outlet; 6. and a battery cell.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A battery case and a battery according to an embodiment of the utility model are described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, the battery case of the embodiment of the present utility model includes a base plate 1, a frame 2, and a supporting spacer 3.

A first flow passage 11 is arranged in the bottom plate 1, and the first flow passage 11 is used for flowing heat conducting medium. The frame 2 is arranged on the bottom plate 1 to form a box inner cavity, and a second flow passage 21 is arranged in the frame 2, and the second flow passage 21 is used for flowing heat conducting medium. The supporting partition plate 3 is arranged in the inner cavity of the box body, a third flow passage 31 is arranged in the supporting partition plate 3, and the third flow passage 31 is used for flowing heat conducting media.

As shown in fig. 1, 2, and 4 to 6, the base plate 1 is horizontally disposed and has a first flow passage 11 for the flow of a heat transfer medium therein. The frame 2 is annular, and the frame 2 is arranged on the bottom plate 1 and surrounds the bottom plate 1 to form a box inner cavity, wherein the box inner cavity is used for accommodating the battery cell, and a second flow passage 21 for flowing of the heat conducting medium is arranged in the frame 2. The inner cavity of the box body is provided with a supporting partition plate 3, the supporting partition plate 3 can be connected to the bottom plate 1 and the frame 2, and can be connected with the bottom plate 1 and the frame 2 at the same time, a third flow passage 31 for flowing a heat conducting medium is arranged in the supporting partition plate 3, the first flow passage 11, the second flow passage 21 and the third flow passage 31 can be independently arranged and respectively provided with independent flow passage inlets and outlets, and can be communicated with one flow passage inlet and outlet respectively, two flow passages which are communicated with one another can be communicated with one another at the same time, and three flow passage inlets and outlets which are communicated with one another at the same time can be communicated with one another.

According to the battery box body, the first flow channel is arranged in the bottom plate, the second flow channel is arranged in the frame, and the third flow channel is arranged in the supporting partition plate, so that the bottom plate, the frame and the supporting partition plate all have the heat conduction effect, particularly the heat dissipation and cooling effect, when a plurality of battery cores are placed in the inner cavity of the box body, the bottom of the whole of the battery cores is used for conducting heat through the bottom plate, the frame is arranged on the periphery of the whole of the battery cores for conducting heat, the supporting partition plate extends to the inside of the whole of the battery cores for conducting the heat of the whole of the battery cores, heat aggregation is avoided, and meanwhile, the bottom, the periphery and the inside of the whole of the battery cores are subjected to the heat conduction effect, so that large temperature difference is not generated among the battery cores, the output power of the battery is stable, and the service life of the battery is prolonged. In addition, the supporting partition plate also plays a role in supporting bearing, and a cross beam is not required to be arranged in the battery box body, so that the inner cavity of the box body has higher space utilization rate.

It should be noted that, the heat conduction of bottom plate, frame and support baffle is not limited to dispel the heat to the electric core, and when the battery box was in comparatively cold environment, the heat conduction of bottom plate, frame and support baffle was warmed up the heat preservation to the electric core.

In some embodiments, the battery case of the present embodiment further comprises a medium inlet 4 and/or a medium outlet 5. The medium inlet 4 is arranged on the frame 2 or the bottom plate 1, and the first flow channel 11, the second flow channel 21 and the third flow channel 31 are communicated with the medium inlet 4. The medium outlet 5 is arranged on the frame 2 or the bottom plate 1, and the first flow passage 11, the second flow passage 21 and the third flow passage 31 are communicated with the medium outlet 5.

As shown in fig. 1 and 2, the medium inlet 4 and the medium outlet 5 are provided on the frame 2, the medium inlet 4 and the medium outlet 5 may be 9 connectors or sockets, the first flow channel 11, the second flow channel 21 and the third flow channel 31 are communicated with each other, the medium inlet 4 and the medium outlet 5 are communicated with at least one of the first flow channel 11, the second flow channel 21 and the third flow channel 31, in other words, the first flow channel 11, the second flow channel 21 and the third flow channel 31 share one medium inlet 4 and medium outlet 5, so that the heat conducting medium is provided and discharged to the first flow channel 11, the second flow channel 21 and the third flow channel 31 through the medium inlet 4 and the medium outlet 5 at the same time, and the heat conducting medium is circulated in the first flow channel 11, the second flow channel 21 and the third flow channel 31, so that the heat transfer effect is realized.

The first flow channel, the second flow channel and the third flow channel share the medium inlet and the medium outlet, so that the structural complexity of the battery box body can be reduced, the use of a pipeline is reduced, and meanwhile, the pipeline is convenient to connect with the battery box body.

It is to be understood that the first, second and third flow channels are not limited to sharing the media inlet and the media outlet simultaneously, and in other embodiments, the first, second and third flow channels share the media inlet, but the first, second and third flow channels each have a corresponding media outlet.

It will be appreciated that the media inlet and media outlet are not limited to being provided on the rim, and in other embodiments, the media inlet and media outlet are provided on the floor or one of the media inlet and media outlet is provided on the rim. The other is located on the bottom plate.

In some embodiments, the first flow channel 11 and the second flow channel 21 have an inlet end and an outlet end, respectively, the inlet end of the first flow channel 11 communicates with the medium inlet 4, and the inlet end of the first flow channel 11 extends from the medium inlet 4 in a first direction (left-to-right direction as viewed in fig. 1), the inlet end of the second flow channel 21 communicates with the medium inlet 4, and the inlet end of the second flow channel 21 extends from the medium inlet 4 in a second direction (right-to-left direction as viewed in fig. 1), the second direction is opposite to the first direction, the outlet end of the first flow channel 11 communicates with the medium outlet 5, and the outlet end of the first flow channel 11 extends from the medium outlet 5 in a second direction, and the outlet end of the second flow channel 21 communicates with the medium outlet 5, and the outlet end of the second flow channel 21 extends from the medium outlet 5 in the first direction.

As shown in fig. 1 to 4, the frame 2 surrounds a circle around the up-down direction and has a rear end face, the medium inlet 4 and the medium outlet 5 are both provided on the rear end face of the frame 2, the inlet end of the first flow passage 11 and the inlet end of the second flow passage 21 are both communicated with the medium inlet 4 so that the heat conducting medium enters the first flow passage 11 and the second flow passage 21 through the medium inlet 4, the inlet end of the first flow passage 11 extends rightward from the medium inlet 4, the inlet end of the second flow passage 21 extends leftward from the medium inlet 4, the outlet end of the first flow passage 11 and the outlet end of the second flow passage 21 are both communicated with the medium outlet 5 so that the heat conducting medium in the first flow passage 11 and the second flow passage 21 is discharged through the medium outlet 5, the outlet end of the first flow passage 11 extends leftward from the medium outlet 5, and the outlet end of the second flow passage 21 extends rightward from the medium outlet 5.

After the heat conducting medium enters the first flow channel 11 through the medium inlet 4, the heat conducting medium flows in the anticlockwise direction around the vertical direction in fig. 1, and when the heat conducting medium plays a role in heat dissipation and cooling, the heat dissipation and cooling effect of the right end of the bottom plate 1 is better than that of the left end of the bottom plate 1. After the heat-conducting medium enters the second flow channel 21 through the medium inlet 4, the heat-conducting medium flows clockwise around the up-down direction in fig. 1, and the heat dissipation and cooling effect of the left end of the frame 2 is better than that of the right end of the frame 2.

Therefore, among the multiple electric cores in the inner cavity of the box body, the part of the electric core at the left end is subjected to the stronger heat dissipation and cooling effect provided by the frame 2 and the weaker heat dissipation and cooling effect of the bottom plate 1, the part of the electric core at the right end is subjected to the weaker heat dissipation and cooling effect provided by the frame 2 and the stronger heat dissipation and cooling effect of the bottom plate 1, so that the heat dissipation and cooling effects of the part of the electric core at the left end and the part of the electric core at the right end are approximately the same, and the multiple electric cores in the inner cavity of the box body are prevented from generating larger temperature difference.

The third flow channel 31 may be selectively communicated with the first flow channel 11 and keep the same flow, or may be selectively communicated with the second flow channel 21 and keep the same flow, in order to ensure that the heat dissipation and cooling effects of the part of the left cell and the part of the right cell are substantially the same.

In some embodiments, the medium inlet 4 and the medium outlet 5 are both disposed on the frame 2, and the frame 2 is further provided with an inlet flow dividing channel 22 and an outlet flow converging channel 23, where the inlet flow dividing channel 22 and the outlet flow converging channel 23 are arranged at intervals in a third direction (a front-back direction as shown in fig. 1), and the third direction is orthogonal to the first direction.

As shown in fig. 1 and 3, the medium inlet 4 and the medium outlet 5 are both disposed on the rear end face of the frame 2, and the frame 2 is further provided therein with an inlet flow dividing channel 22 and an outlet flow converging channel 23, the inlet flow dividing channel 22 communicates the medium inlet 4, the inlet end of the first flow channel 11 and the inlet end of the second flow channel 21, and the heat conducting medium entering the medium inlet 4 enters the first flow channel 11 and the second flow channel 21 after being divided and guided by the inlet flow dividing channel 22. The outlet confluence flow passage 23 communicates the medium outlet 5, the outlet end of the first flow passage 11, and the outlet end of the second flow passage 21, and the heat conductive medium in the first flow passage 11 and the second flow passage 21 is discharged from the medium outlet 5 after confluence of the outlet confluence flow passage 23. The inlet flow-dividing flow passages 22 and the outlet flow-converging flow passages 23 are arranged at intervals in the front-rear direction, in other words, the inlet flow-dividing flow passages 22 and the outlet flow-converging flow passages 23 are arranged at intervals in the wall thickness direction of the frame 2 so as to avoid the mutual interference or crosstalk of the inlet flow-dividing flow passages 22, the outlet flow-converging flow passages 23, the first flow passages 11 and the second flow passages 21.

The inlet split flow passage 22 includes a first sub flow passage 221 and a second sub flow passage 222 that are communicated, the first sub flow passage 221 extending in a fourth direction (up-down direction as shown in fig. 1), the fourth direction being orthogonal to the first direction and the third direction, the first sub flow passage 221 being communicated between the medium inlet 4 and the inlet end of the first flow passage 11, the second sub flow passage 222 extending from the first sub flow passage 221 to the second direction, the inlet end of the second flow passage 21 being communicated with the second sub flow passage 222.

As shown in fig. 3, the inlet flow dividing flow passage 22 includes a first sub-flow passage 221 and a second sub-flow passage 222, the top of the first sub-flow passage 221 communicates with the medium inlet 4, the first sub-flow passage 221 extends downward from the medium inlet 4 and communicates with the inlet end of the first flow passage 11, the inlet end of the first flow passage 11 extends rightward from the first sub-flow passage 221, the second sub-flow passage 222 is provided at the middle of the first sub-flow passage 221 in the up-down direction, and the second sub-flow passage 222 extends leftward from the first sub-flow passage 221 and communicates with the inlet end of the second flow passage 21.

The heat conductive medium entering the medium inlet 4 first enters the first sub-flow channel 221, a part of the heat conductive medium flows downward in the extending direction of the first sub-flow channel 221 and enters the first flow channel 11, then flows in the counterclockwise direction in the first flow channel 11, and another part of the heat conductive medium enters the second sub-flow channel 222 from the first sub-flow channel 221 and enters the second flow channel 21 through the second sub-flow channel 222, then flows in the clockwise direction in the second flow channel 21. The diversion of the heat transfer medium is thus achieved by the inlet diversion flow passage 22, and the heat transfer medium in the first flow passage 11 and the second flow passage 21 is caused to flow reversely in the left-right direction.

The outlet confluence flow passage 23 includes a third sub-flow passage 231 and a fourth sub-flow passage 232 which are communicated, the third sub-flow passage 231 extending in the fourth direction, the third sub-flow passage 231 being communicated between the medium outlet 5 and the outlet end of the first flow passage 11, the fourth sub-flow passage 232 extending from the third sub-flow passage 231 in the first direction, the outlet end of the second flow passage 21 being communicated with the fourth sub-flow passage 232.

As shown in fig. 3, the outlet confluence flow passage 23 includes a third sub flow passage 231 and a fourth sub flow passage 232, the top of the third sub flow passage 231 communicates with the medium outlet 5, the third sub flow passage 231 extends downward from the medium outlet 5 and communicates with the outlet end of the first flow passage 11, the outlet end of the first flow passage 11 extends leftward from the third sub flow passage 231, the fourth sub flow passage 232 is provided at the middle of the third sub flow passage 231 in the up-down direction, and the fourth sub flow passage 232 extends rightward from the third sub flow passage 231 and communicates with the outlet end of the second flow passage 21.

The heat conductive medium flowing in the counterclockwise direction in the first flow path 11 enters the third sub-flow path 231 from the bottom of the third sub-flow path 231, then flows upward and is discharged from the medium outlet 5, and the heat conductive medium flowing in the clockwise direction in the second flow path 21 first enters the fourth sub-flow path 232, then enters the third sub-flow path 231 and is mixed with the heat conductive medium in the third sub-flow path 231, and finally is discharged from the medium outlet 5 together.

It will be appreciated that the media inlet and media outlet are not limited to being provided on a rim, and in other embodiments, the media inlet and media outlet are provided on a floor.

It will be appreciated that the configuration of the inlet flow splitter and outlet flow combiner is not limited to that shown in fig. 3, and in other embodiments, the media inlet and the media outlet are provided on the bottom plate, and the inlet flow splitter and the outlet flow combiner each include a first flow path extending in the up-down direction, a second flow path extending in the front-back direction, and a third flow path extending in the left-right direction, the first flow path, the second flow path, and the third flow path being connected to one another at the same point, and the second flow path and the third flow path being located in the bottom plate. In the inlet flow dividing flow passage, the rear end of the second flow passage is communicated with the medium inlet, the front end of the second flow passage is communicated with the first flow passage and the third flow passage, the third flow passage extends leftwards and is communicated with the inlet end of the first flow passage, and the third flow passage extends upwards and is communicated with the inlet end of the second flow passage. In the outlet converging flow passage, the rear end of the second flow passage is communicated with the medium outlet, the third flow passage extends rightward and is communicated with the outlet of the first flow passage, and the first flow passage extends upward and is communicated with the outlet of the second flow passage. The second flow paths of the inlet flow dividing flow channel and the outlet converging flow channel are arranged at intervals in the left-right direction, and the first flow paths of the inlet flow dividing flow channel and the outlet converging flow channel are arranged at intervals in the front-back direction.

In some embodiments, the medium inlet 4 and the medium outlet 5 are arranged at intervals in the first direction, and the medium inlet 4 is located at one side of the medium outlet 5 in the first direction, and the first sub-flow channel 221 is projected at one side of the third sub-flow channel 231 projected in the first direction in a projection plane orthogonal to the third direction.

As shown in fig. 3, the medium inlet 4 and the medium outlet 5 are arranged at intervals in the left-right direction, and the medium inlet 4 is located on the right side of the medium outlet 5. In the projection plane orthogonal to the left-right direction, the projections of the first sub-flow channel 221 and the projections of the third sub-flow channel 231 are arranged at intervals in the front-rear direction, and the projections of the first sub-flow channel 221 are located at the rear side of the projections of the third sub-flow channel 231, the projections of the second sub-flow channel 222 and the projections of the fourth sub-flow channel 232 are arranged at intervals in the front-rear direction, and the projections of the second sub-flow channel 222 are located at the rear side of the projections of the fourth sub-flow channel 232. In the projection plane orthogonal to the front-rear direction, the projections of the first sub-flow channel 221 and the projections of the third sub-flow channel 231 are arranged at intervals in the left-right direction, and the projections of the first sub-flow channel 221 are located on the right side of the projections of the third sub-flow channel 231, the projections of the second sub-flow channel 222 coincide with the projection portions of the third sub-flow channel 231, and the projections of the fourth sub-flow channel 232 coincide with the projection portions of the first sub-flow channel 221. The media inlet 4 and media outlet 5 are positioned adjacent to facilitate connection of external piping while also avoiding interference and cross-talk of the inlet manifold 22 and outlet manifold 23.

In addition, since the projection of the second sub-runner 222 coincides with the projection of the third sub-runner 231 and the projection of the fourth sub-runner 232 coincides with the projection of the first sub-runner 221 in the projection plane orthogonal to the front-rear direction, the second runner 21, the second sub-runner 222 and the fourth sub-runner 232 surround one or more circles along the circumferential direction of the frame, and the whole of the plurality of battery cells located in the inner cavity of the case can be subjected to heat conduction in the circle around the upper-lower direction, so that the problem that the temperature difference occurs in the parts of the whole of the plurality of battery cells corresponding to the notches due to the fact that the second runner 21, the second sub-runner 222 and the fourth sub-runner 232 are not subjected to heat conduction is avoided.

It will be appreciated that the media inlet and the media outlet are not limited to being spaced apart in the left-right direction, and in other embodiments, the media inlet and the media outlet are spaced apart in the up-down direction, e.g., the media inlet is located below the media outlet, where the first sub-flow channel and the third sub-flow channel are spaced apart in the front-to-back direction.

In some embodiments, the cross-sectional area of the second flow passage 21 is greater than the cross-sectional area of the second sub-flow passage 222, and the cross-sectional area of the second flow passage 21 is greater than the cross-sectional area of the fourth sub-flow passage 232.

Specifically, the size of the cross section of the second flow channel 21 in the front-rear direction is larger than the size of the cross section of the second sub flow channel 222 in the front-rear direction, the position where the inlet end of the second flow channel 21 communicates with the second sub flow channel 222 is in a stepped shape or a flared shape, the size of the cross section of the second flow channel 21 in the front-rear direction is larger than the size of the cross section of the fourth sub flow channel 232 in the front-rear direction, the position where the outlet end of the second flow channel 21 communicates with the fourth sub flow channel 232 is in a stepped shape or a closed shape, wherein the flared shape and the closed shape are arranged along the flow direction of the heat conducting medium.

Increasing the size of the cross section of the second runner 21 in the front-rear direction can improve the heat conduction effect of the frame, when the heat conduction effect is the heat dissipation cooling effect, the heat of the battery cell can be rapidly dissipated, the size of the cross section of the second sub runner 222 in the front-rear direction and the size of the cross section of the fourth sub runner 232 in the front-rear direction are smaller than the size of the cross section of the second runner 21 in the front-rear direction, the inlet split runner 22 and the outlet converging runner 23 can be arranged at intervals in the front-rear direction, and the wall thickness of the frame 2 does not need to be increased.

It is understood that the second flow channel is not limited to the cross-sectional area having a larger dimension in the front-rear direction than the second sub-flow channel and the fourth sub-flow channel, and in other embodiments, the cross-sectional area of the second flow channel is also larger in the up-down direction than the cross-sectional area of the second sub-flow channel and the fourth sub-flow channel.

In some embodiments, the support partition 3 extends in the first direction, both ends of the support partition 3 in the first direction are connected to the frame 2, the third flow passage 31 extends in the first direction, and both ends of the third flow passage 31 in the first direction are connected to the second flow passage 21.

As shown in fig. 1 and 2, the support partition 3 and the internal third flow passage 31 each extend in the left-right direction, the left end of the support partition 3 is connected to the left end portion of the frame 2, and the left end of the third flow passage 31 is connected to the second flow passage 21 in the left end portion of the frame 2, the right end of the support partition 3 is connected to the right end portion of the frame 2, and the right end of the third flow passage 31 is connected to the second flow passage 21 in the right end portion of the frame 2. When the heat transfer medium in the second flow channel 21 flows to the left end part of the frame 2 in the clockwise direction, part of the heat transfer medium enters the third flow channel 31 from the left end of the supporting partition plate 3 and flows from left to right in the third flow channel 31, then enters the right end part of the frame 2 from the right end of the supporting partition plate 3, and merges with the heat transfer medium in the second flow channel 21 in the right end part of the frame 2, in other words, in the left-right direction, the flow directions of the heat transfer medium in the second flow channel 21 and the third flow channel 31 are opposite to the flow direction of the heat transfer medium in the first flow channel 11, and the temperature difference of the electric core is balanced at the moment, so that the temperature difference is not easy to generate.

It will be appreciated that the structure of the support barrier is not limited to a flat plate extending in a straight line, and in other embodiments the support barrier is disposed obliquely or partially bent, such as in a zig-zag configuration.

In some embodiments, the cross section of the second flow channel 21 is a bar shape extending along a fourth direction orthogonal to the first direction, the third flow channels 31 in the support partition 3 are plural, and the plural third flow channels 31 are arranged at intervals in the fourth direction

As shown in fig. 5 and 6, the cross section of the second flow channel 21 is a bar shape extending in the up-down direction, so that the heat transfer function of the frame 2 in the up-down direction is more uniform, and the temperature of the battery cell in the up-down direction is uniform. The third flow passages 31 in the supporting partition plate 3 are multiple, and the multiple third flow passages 31 are distributed at intervals in the up-down direction, so that the heat transfer function of the supporting partition plate 3 in the up-down direction is more balanced, the temperature of the battery cell in the up-down direction is balanced, and meanwhile, the heat conducting medium can stay in the supporting partition plate 3 for a long time due to the fact that the contact area between the heat conducting medium and the supporting partition plate 3 is large, and more heat can be transferred by the heat conducting medium in the supporting partition plate 3.

It will be appreciated that the structures of the second flow channel and the third flow channel are not limited to those shown in fig. 5 and 6, and in other embodiments, the second flow channel may be a plurality of flow channels arranged at intervals in the up-down direction, and the third flow channel may be a strip flow channel, or the second flow channel and the third flow channel may be in a grid shape or an S shape.

In some embodiments, the first flow channel 11 includes a fifth sub-flow channel 111, a sixth sub-flow channel 112, and a seventh sub-flow channel 113, the fifth sub-flow channel 111 being in communication with the media inlet 4 and extending from the media inlet 4 in a first direction, the sixth sub-flow channel 112 being in communication with the media outlet 5 and extending from the media outlet 5 in a second direction, the seventh sub-flow channel 113 being in communication between the fifth sub-flow channel 111 and the sixth sub-flow channel 112, and at least a portion of the seventh sub-flow channel 113 extending in a third direction, the third direction being orthogonal to the fourth direction and the first direction, the seventh sub-flow channel 113 being a plurality.

As shown in fig. 4, the first flow passage 11 includes a fifth sub-flow passage 111, a sixth sub-flow passage 112, and a seventh sub-flow passage 113. The fifth sub-flow passage 111 and the sixth sub-flow passage 112 extend along the left-right direction, the fifth sub-flow passage 111 and the sixth sub-flow passage 112 are arranged at intervals in the left-right direction, the fifth sub-flow passage 111 is positioned on the right side of the sixth sub-flow passage 112, the left end of the fifth sub-flow passage 111 is communicated with the medium inlet 4, the right end of the sixth sub-flow passage 112 is communicated with the medium outlet 5, the seventh sub-flow passage 113 is U-shaped, the left end of the seventh sub-flow passage 113 extends along the front-back direction and is communicated with the sixth sub-flow passage 112, the right end of the seventh sub-flow passage 113 extends along the front-back direction and is communicated with the fifth sub-flow passage 111, the middle part of the seventh sub-flow passage 113 extends along the left-right direction, the seventh sub-flow passage 113 is a plurality of seventh sub-flow passages 113, and the seventh sub-flow passages 113 are sequentially arranged at intervals. So that the heat-conducting medium in the first flow channel 11 flows in a counterclockwise direction, and the bottom of each electric core in the inner cavity of the box body is provided with the first flow channel 11.

It is to be understood that the structure of the first flow channel is not limited to that shown in fig. 4, and in other embodiments, the first flow channel includes a main flow channel and a plurality of branch flow channels, the main flow channel is annular, the branch flow channels extend in the left-right direction and are plural, two ends of the branch flow channels are all communicated with the main flow channel, and the plurality of branch flow channels are arranged at intervals in the front-rear direction.

In some embodiments, the inner cavity of the box body includes a first subchamber 24 and a second subchamber 25, the first subchamber 24 and the second subchamber 25 are sequentially arranged in a third direction, the third direction is orthogonal to the first direction, the plurality of support partitions 3 are provided in the first subchamber 24 to divide the first subchamber 24 into a plurality of battery cells 241, the battery cells 241 are used for accommodating battery cells, and the second subchamber 25 is used for accommodating the battery management system.

As shown in fig. 1 and 2, the front end portion of the box inner cavity is T-shaped, the size of the front end portion of the box inner cavity in the left-right direction is smaller than the size of the rear end portion of the box inner cavity in the left-right direction, a plurality of support partitions 3 are arranged in the box inner cavity, the plurality of support partitions 3 are arranged at intervals in the front-rear direction, the support partition 3 at the forefront end is arranged in the front end portion of the box inner cavity and divides the box inner cavity into a first subchamber 24 and a second subchamber 25, the first subchamber 24 is located at the rear side of the second subchamber 25, the first subchamber 24 is divided into a plurality of battery cell bins 241 by the plurality of support partitions 3, the plurality of battery cell bins 241 are arranged at intervals in the front-rear direction, the space between two adjacent support partitions 3 is the battery cell bin 241, the space between the last support partition 3 and the rear end of the frame 2 is also the battery cell bin 241, and the battery cell bin 241 is used for accommodating any number of battery cell groups.

The electric core group includes two electric cores that arrange in proper order in the fore-and-aft direction, and the preceding terminal surface and the rear end face of electric core are the terminal surface that the area is biggest on the electric core, the preceding terminal surface and the corresponding support baffle 3 butt of the electric core that lie in the front end of two electric cores, the preceding terminal surface and the corresponding support baffle 3 or the frame 2 butt of electric core that lie in the rear end, so that every electric core all has the terminal surface that the area is biggest and support baffle 3 or frame 2 offsets, in order to realize the quick transfer of heat, simultaneously, the bottom of every electric core all butt bottom plate 1, because the flow direction of heat conduction medium is opposite in the left and right directions in support baffle 3 and the frame 2 in the bottom plate 1, consequently under the heat conduction effect of bottom plate 1, support baffle 3 and frame 2, every electric core's heat can keep balanced, can not produce great temperature difference. The second subchamber 25 is for housing the battery management system.

The bottom plate 1 is also T-shaped, and the left and right sides of the rear end portion of the bottom plate 1 are respectively provided with a tenth sub-runner, the tenth sub-runner extends in the front-rear direction, the rear end of the tenth sub-runner is communicated with the corresponding fifth sub-runner 111 or sixth sub-runner 112, and the front end of the tenth sub-runner is communicated with the seventh sub-runner 113 at the outermost end through a connecting flow path extending in the left-right direction, so that the first flow channel 11 is arranged below each cell.

The supporting partition board 3 also plays a limiting role on the battery cell, so that the energy density of the battery is improved, the battery cell is more concise to set, and a CTP mode is realized.

It will be appreciated that the structure of the housing cavity is not limited to including a first subchamber and a second subchamber, and in other embodiments the housing cavity is a rectangular or circular space.

In some embodiments, the second flow channel 21 includes an eighth sub-flow channel and a ninth sub-flow channel, the eighth sub-flow channel and the ninth sub-flow channel being arranged at intervals in the first direction, the eighth sub-flow channel being in communication with the medium inlet 4, the ninth sub-flow channel being in communication with the medium outlet 5, the third flow channel 31 being in communication between the eighth sub-flow channel and the ninth sub-flow channel.

As shown in fig. 2, the second flow path 21 includes an eighth sub-flow path and a ninth sub-flow path, the eighth sub-flow path being in communication with the medium inlet 4, and the eighth sub-flow path extending from the medium inlet 4 to the left end portion of the frame 2, the ninth sub-flow path being in communication with the medium outlet 5, and the ninth sub-flow path extending from the medium outlet 5 to the right end portion of the frame 2, the eighth sub-flow path and the ninth sub-flow path being arranged at intervals in the left-right direction, in other words, the eighth sub-flow path and the ninth sub-flow path are not directly in communication. The third flow channel 31 on the supporting partition plate 3 is communicated between the eighth sub flow channel and the ninth sub flow channel, so that the eighth sub flow channel and the ninth sub flow channel are indirectly communicated through the third flow channel 31, the front end of the eighth sub flow channel is communicated with the left end of the third flow channel 31 on the foremost supporting partition plate 3, the front end of the ninth sub flow channel is communicated with the right end of the third flow channel 31 on the foremost supporting partition plate 3, and the second flow channel 21 is not arranged in a part of the frame 2 surrounding the second sub cavity 25.

It will be appreciated that the configuration of the second flow path is not limited to include an eighth sub-flow path and a ninth sub-flow path, and in other embodiments, the second flow path itself also forms the circulation flow path, e.g., the second flow path is also provided in a portion of the rim surrounding the second sub-chamber.

As shown in fig. 1 to 6, the battery according to the embodiment of the present utility model includes a battery case and a battery cell 6.

The battery box body is the battery box body of the embodiment of the utility model. The battery cells 6 are arranged in the inner cavity of the box body, the battery cells 6 are multiple, and each battery cell 6 is abutted against the supporting partition plate 3 or the frame 2.

As shown in fig. 1 and 2, a plurality of support baffles 3 are arranged in the inner cavity of the box body, the plurality of support baffles 3 are arranged at intervals in the front-rear direction, wherein the support baffle 3 at the forefront end divides the inner cavity of the box body into a first subchamber 24 and a second subchamber 25, the first subchamber 24 is divided into a plurality of battery cell bins 241 by the plurality of support baffles 3, and the battery cell bins 241 are used for accommodating any number of battery cell groups. The electric core group includes two electric cores that arrange in proper order in the fore-and-aft direction to make every electric core all have the terminal surface that an area is biggest and support baffle 3 or frame 2 offset, in order to realize the quick transfer of heat, simultaneously, the bottom of every electric core all butt bottom plate 1, because the flow direction of heat conduction medium is opposite in the left and right directions in the heat conduction medium in support baffle 3 and the frame 2 and the bottom plate 1, consequently under the heat conduction effect of bottom plate 1, support baffle 3 and frame 2, every electric core self heat can keep the equilibrium, can not produce great temperature difference. The second subchamber 25 is for housing the battery management system.

The battery provided by the embodiment of the utility model has the advantages that the temperature of the plurality of battery cores accommodated in the inner cavity of the battery box can be balanced, and meanwhile, the supporting partition plate can transfer out the whole internal heat of the plurality of battery cores, so that the problem of heat aggregation is avoided.

In some embodiments, the battery according to the embodiment of the present utility model further includes a cover plate, where the cover plate is disposed on the frame 2 to close the inner cavity of the case, and the upper end surface of the supporting partition plate 3 is connected to the cover plate in an abutting manner, so as to play a role in supporting the cover plate, and the battery management system located in the second subchamber 25 is integrated on the cover plate.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between and not for indicating or implying a relative importance or an implicit indication of the number of features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A battery box, comprising:

The heat conducting device comprises a base plate (1), wherein a first flow channel (11) is arranged in the base plate (1), and the first flow channel (11) is used for flowing heat conducting media;

the frame (2) is arranged on the bottom plate (1) to form a box inner cavity, a second flow passage (21) is arranged in the frame (2), and the second flow passage (21) is used for flowing heat conducting medium;

the heat conducting device comprises a supporting partition plate (3), wherein the supporting partition plate (3) is arranged in an inner cavity of the box body, a third flow passage (31) is arranged in the supporting partition plate (3), and the third flow passage (31) is used for flowing heat conducting media.

2. The battery case according to claim 1, further comprising:

a medium inlet (4), wherein the medium inlet (4) is arranged on the frame (2) or the bottom plate (1), and the first flow channel (11), the second flow channel (21) and the third flow channel (31) are communicated with the medium inlet (4); and/or

The medium outlet (5), medium outlet (5) is established frame (2) or on bottom plate (1), first runner (11), second runner (21) and third runner (31) all with medium outlet (5) intercommunication.

3. The battery box according to claim 2, wherein the first flow channel (11) and the second flow channel (21) have an inlet end and an outlet end, respectively,

The inlet end of the first flow channel (11) is communicated with the medium inlet (4), the inlet end of the first flow channel (11) extends from the medium inlet (4) to a first direction, the inlet end of the second flow channel (21) is communicated with the medium inlet (4), the inlet end of the second flow channel (21) extends from the medium inlet (4) to a second direction, the second direction is reverse to the first direction,

the outlet end of the first flow channel (11) is communicated with the medium outlet (5), the outlet end of the first flow channel (11) extends from the medium outlet (5) to the second direction, the outlet end of the second flow channel (21) is communicated with the medium outlet (5), and the outlet end of the second flow channel (21) extends from the medium outlet (5) to the first direction.

4. A battery box according to claim 3, characterized in that the medium inlet (4) and the medium outlet (5) are provided on the frame (2),

an inlet flow dividing flow passage (22) and an outlet flow converging flow passage (23) are further arranged in the frame (2), the inlet flow dividing flow passage (22) and the outlet flow converging flow passage (23) are arranged at intervals in a third direction, the third direction is orthogonal to the first direction,

the inlet flow splitter (22) comprises a first sub-flow channel (221) and a second sub-flow channel (222) which are communicated, the first sub-flow channel (221) extends along a fourth direction, the fourth direction is orthogonal to the first direction and the third direction, the first sub-flow channel (221) is communicated between the medium inlet (4) and the inlet end of the first flow channel (11), the second sub-flow channel (222) extends from the first sub-flow channel (221) to the second direction, the inlet end of the second flow channel (21) is communicated with the second sub-flow channel (222),

The outlet confluence flow passage (23) comprises a third sub flow passage (231) and a fourth sub flow passage (232) which are communicated, the third sub flow passage (231) extends along a fourth direction, the third sub flow passage (231) is communicated between the medium outlet (5) and the outlet end of the first flow passage (11), the fourth sub flow passage (232) extends from the third sub flow passage (231) to the first direction, and the outlet end of the second flow passage (21) is communicated with the fourth sub flow passage (232).

5. The battery box according to claim 4, characterized in that the medium inlet (4) and the medium outlet (5) are arranged at intervals in the first direction, and the medium inlet (4) is located at one side of the medium outlet (5) in the first direction, and the first sub-flow channel (221) is projected at one side of the third sub-flow channel (231) in a projection plane orthogonal to the third direction.

6. The battery case according to claim 4, wherein the cross-sectional area of the second flow passage (21) is larger than the cross-sectional area of the second sub-flow passage (222), and the cross-sectional area of the second flow passage (21) is larger than the cross-sectional area of the fourth sub-flow passage (232).

7. The battery case according to any one of claims 3 to 6, wherein the support separator (3) extends in a first direction, both ends of the support separator (3) in the first direction are connected to the frame (2), the third flow passage (31) extends in the first direction, and both ends of the third flow passage (31) in the first direction are in communication with the second flow passage (21).

8. The battery case according to claim 7, wherein the cross section of the second flow passage (21) is in a bar shape extending in a fourth direction orthogonal to the first direction, the third flow passages (31) in the support separator (3) are plural, and the plural third flow passages (31) are arranged at intervals in the fourth direction; and/or

The first flow channel (11) comprises a fifth sub flow channel (111), a sixth sub flow channel (112) and a seventh sub flow channel (113), wherein the fifth sub flow channel (111) is communicated with the medium inlet (4) and extends along the first direction through the medium inlet (4), the sixth sub flow channel (112) is communicated with the medium outlet (5) and extends along the second direction through the medium outlet (5), the seventh sub flow channel (113) is communicated between the fifth sub flow channel (111) and the sixth sub flow channel (112), at least part of the seventh sub flow channel (113) extends along a third direction, and the third direction is orthogonal to the fourth direction and the first direction, and the seventh sub flow channel (113) is a plurality of.

9. The battery box according to claim 7, wherein the box inner cavity comprises a first subchamber (24) and a second subchamber (25), the first subchamber (24) and the second subchamber (25) are sequentially arranged in a third direction, the third direction is orthogonal to the first direction, the plurality of supporting partition boards (3) are arranged in the first subchamber (24) to divide the first subchamber (24) into a plurality of battery cell bins (241), the battery cell bins (241) are used for containing battery cells, and the second subchamber (25) is used for containing a battery management system;

the second flow channel (21) comprises an eighth sub flow channel and a ninth sub flow channel, the eighth sub flow channel and the ninth sub flow channel are arranged at intervals in the first direction, the eighth sub flow channel is communicated with the medium inlet (4), the ninth sub flow channel is communicated with the medium outlet (5), and the third flow channel (31) is communicated between the eighth sub flow channel and the ninth sub flow channel.

10. A battery, comprising:

a battery box according to any one of claims 1 to 9;

the battery cells (6), battery cells (6) are arranged in the inner cavity of the box body, the number of the battery cells (6) is multiple, and each battery cell (6) is abutted against the supporting partition plate (3) or the frame (2).